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<!--
Copyright 2009, Google Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
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* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>
Simple Scene Viewer
</title>
<style type="text/css">
html, body {
margin: 0;
padding: 0;
border: 0;
height: 100%;
}
</style>
</head>
<body onload="init();" onunload="uninit();">
<script type="text/javascript" src="../o3djs/base.js"></script>
<script type="text/javascript">
o3djs.require('o3djs.util');
o3djs.require('o3djs.math');
o3djs.require('o3djs.quaternions');
o3djs.require('o3djs.rendergraph');
o3djs.require('o3djs.pack');
o3djs.require('o3djs.arcball');
o3djs.require('o3djs.scene');
var g_root;
var g_o3d;
var g_math;
var g_quaternions;
var g_client;
var g_aball;
var g_thisRot;
var g_lastRot;
var g_pack = null;
var g_mainPack;
var g_viewInfo;
var g_lightPosParam;
var g_loadingElement;
var g_o3dWidth = -1;
var g_o3dHeight = -1;
var g_o3dElement;
var g_finished = false; // for selenium
var g_camera = {
farPlane: 5000,
nearPlane:0.1
};
var g_dragging = false;
function startDragging(e) {
g_lastRot = g_thisRot;
g_aball.click([e.x, e.y]);
g_dragging = true;
}
function drag(e) {
if (g_dragging) {
var rotationQuat = g_aball.drag([e.x, e.y]);
var rot_mat = g_quaternions.quaternionToRotation(rotationQuat);
g_thisRot = g_math.matrix4.mul(g_lastRot, rot_mat);
var m = g_root.localMatrix;
g_math.matrix4.setUpper3x3(m, g_thisRot);
g_root.localMatrix = m;
}
}
function stopDragging(e) {
g_dragging = false;
}
function updateCamera() {
var up = [0, 1, 0];
g_viewInfo.drawContext.view = g_math.matrix4.lookAt(g_camera.eye,
g_camera.target,
up);
g_lightPosParam.value = g_camera.eye;
}
function updateProjection() {
// Create a perspective projection matrix.
g_viewInfo.drawContext.projection = g_math.matrix4.perspective(
g_math.degToRad(45), g_o3dWidth / g_o3dHeight, g_camera.nearPlane,
g_camera.farPlane);
}
function scrollMe(e) {
if (e.deltaY) {
var t = 1;
if (e.deltaY > 0)
t = 11 / 12;
else
t = 13 / 12;
g_camera.eye = g_math.lerpVector(g_camera.target, g_camera.eye, t);
updateCamera();
}
}
function enableInput(enable) {
document.getElementById("url").disabled = !enable;
document.getElementById("load").disabled = !enable;
}
function loadFile(context, path) {
function callback(pack, parent, exception) {
enableInput(true);
if (exception) {
alert("Could not load: " + path + "\n" + exception);
g_loadingElement.innerHTML = "loading failed.";
} else {
g_loadingElement.innerHTML = "loading finished.";
// Generate draw elements and setup material draw lists.
o3djs.pack.preparePack(pack, g_viewInfo);
var bbox = o3djs.util.getBoundingBoxOfTree(g_client.root);
g_camera.target = g_math.lerpVector(bbox.minExtent, bbox.maxExtent, 0.5);
var diag = g_math.length(g_math.subVector(bbox.maxExtent,
bbox.minExtent));
g_camera.eye = g_math.addVector(g_camera.target, [0, 0, 1.5 * diag]);
g_camera.nearPlane = diag / 1000;
g_camera.farPlane = diag * 10;
setClientSize();
updateCamera();
updateProjection();
// Manually connect all the materials' lightWorldPos params to the context
var materials = pack.getObjectsByClassName('o3d.Material');
for (var m = 0; m < materials.length; ++m) {
var material = materials[m];
var param = material.getParam('lightWorldPos');
if (param) {
param.bind(g_lightPosParam);
}
}
g_finished = true; // for selenium
// Comment out the next line to dump lots of info.
if (false) {
o3djs.dump.dump('---dumping context---\n');
o3djs.dump.dumpParamObject(context);
o3djs.dump.dump('---dumping root---\n');
o3djs.dump.dumpTransformTree(g_client.root);
o3djs.dump.dump('---dumping render root---\n');
o3djs.dump.dumpRenderNodeTree(g_client.renderGraphRoot);
o3djs.dump.dump('---dump g_pack shapes---\n');
var shapes = pack.getObjectsByClassName('o3d.Shape');
for (var t = 0; t < shapes.length; t++) {
o3djs.dump.dumpShape(shapes[t]);
}
o3djs.dump.dump('---dump g_pack materials---\n');
var materials = pack.getObjectsByClassName('o3d.Material');
for (var t = 0; t < materials.length; t++) {
o3djs.dump.dump (
' ' + t + ' : ' + materials[t].className +
' : "' + materials[t].name + '"\n');
o3djs.dump.dumpParams(materials[t], ' ');
}
o3djs.dump.dump('---dump g_pack textures---\n');
var textures = pack.getObjectsByClassName('o3d.Texture');
for (var t = 0; t < textures.length; t++) {
o3djs.dump.dumpTexture(textures[t]);
}
o3djs.dump.dump('---dump g_pack effects---\n');
var effects = pack.getObjectsByClassName('o3d.Effect');
for (var t = 0; t < effects.length; t++) {
o3djs.dump.dump (' ' + t + ' : ' + effects[t].className +
' : "' + effects[t].name + '"\n');
o3djs.dump.dumpParams(effects[t], ' ');
}
}
}
}
g_pack = g_client.createPack();
// Create a new transform for the loaded file
var parent = g_pack.createObject('Transform');
parent.parent = g_client.root;
if (path != null) {
g_loadingElement.innerHTML = "Loading: " + path;
enableInput(false);
try {
o3djs.scene.loadScene(g_client, g_pack, parent, path, callback);
} catch (e) {
enableInput(true);
g_loadingElement.innerHTML = "loading failed : " + e;
}
}
return parent;
}
function setClientSize() {
var newWidth = parseInt(g_client.width);
var newHeight = parseInt(g_client.height);
if (newWidth != g_o3dWidth || newHeight != g_o3dHeight) {
g_o3dWidth = newWidth;
g_o3dHeight = newHeight;
updateProjection();
// Sets a new area size for arcball.
g_aball.setAreaSize(g_o3dWidth, g_o3dHeight);
}
}
/**
* Called every frame.
*/
function onRender() {
// If we don't check the size of the client area every frame we don't get a
// chance to adjust the perspective matrix fast enough to keep up with the
// browser resizing us.
setClientSize();
}
/**
* Creates the client area.
*/
function init() {
o3djs.util.makeClients(initStep2);
}
/**
* Initializes O3D and loads the scene into the transform graph.
* @param {Array} clientElements Array of o3d object elements.
*/
function initStep2(clientElements) {
var path = window.location.href;
var index = path.lastIndexOf('/');
path = path.substring(0, index+1) + 'assets/cube.o3dtgz';
var url = document.getElementById("url").value = path;
g_loadingElement = document.getElementById('loading');
g_o3dElement = clientElements[0];
g_o3d = g_o3dElement.o3d;
g_math = o3djs.math;
g_quaternions = o3djs.quaternions;
g_client = g_o3dElement.client;
g_mainPack = g_client.createPack();
// Create the render graph for a view.
g_viewInfo = o3djs.rendergraph.createBasicView(
g_mainPack,
g_client.root,
g_client.renderGraphRoot);
g_lastRot = g_math.matrix4.identity();
g_thisRot = g_math.matrix4.identity();
var root = g_client.root;
g_aball = o3djs.arcball.create(100, 100);
setClientSize();
// Set the light at the same position as the camera to create a headlight
// that illuminates the object straight on.
var paramObject = g_mainPack.createObject('ParamObject');
g_lightPosParam = paramObject.createParam('lightWorldPos', 'ParamFloat3');
g_camera.target = [0, 0, 0];
g_camera.eye = [0, 0, 5];
updateCamera();
doload()
o3djs.event.addEventListener(g_o3dElement, 'mousedown', startDragging);
o3djs.event.addEventListener(g_o3dElement, 'mousemove', drag);
o3djs.event.addEventListener(g_o3dElement, 'mouseup', stopDragging);
o3djs.event.addEventListener(g_o3dElement, 'wheel', scrollMe);
g_client.setRenderCallback(onRender);
}
/**
* Removes any callbacks so they don't get called after the page has unloaded.
*/
function uninit() {
if (g_client) {
g_client.cleanup();
}
}
function doload() {
if (g_root) {
g_root.parent = null;
g_root = null;
}
if (g_pack) {
g_pack.destroy();
g_pack = null;
}
var url = document.getElementById('url').value;
g_root = loadFile(g_viewInfo.drawContext, url);
}
</script>
<table width="100%" style="height:100%;">
<tr><td valign="middle" align="center" height="100%">
<table width="100%" style="height:100%;"><tr><td height="100%">
<h1>
Simple Scene Viewer
</h1>
<table id="container" width="90%" style="height:60%;" border="2"><tr><td height="100%">
<div id="o3d" style="width: 100%; height: 100%;"></div>
</td></tr></table>
<p>
</p>
<input type="text" id="url" size="100">
<input type="button" id="load" onclick="doload();" value="load"><BR>
Drag The Mouse To Rotate<br/>
Scrollwheel To Zoom<br/>
Resize The Window To Resize The View
<div style="color: red;" id="loading"></div>
</td></tr></table>
</td></tr></table>
</body>
</html>
|
